6.6and6.7小开心@长情 <p class="ql-block">光盘啦</p> <p class="ql-block">6.6十以内加减法</p> <p class="ql-block">光盘！</p> <p class="ql-block">玩会沙子吧</p> <p class="ql-block">6.7分解与组成练习</p> <p class="ql-block">小真的长头发</p> <p class="ql-block">圆形和椭圆形</p>